complete the square y^2+9y?

2 ⤊

complete the square y^2+9y?

2007-08-06 19:09:15 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

4 answers

y² + 9y
[ y² + 9y + 81/4 ] - 81/4
(x + 9/2)² - 81/4

2007-08-06 19:22:21 · answer #1 · answered by Como 7 · 2⤊ 0⤋

take the midterm 9y divide it by the square root of the first term (y in this case) to get 9
take 1/2 of 9 and square it (9/2 = 4.5 squared is 20.25 = 81/4 ) so you need to add 20.25 to complete the square.

y^2+9y+20.25 or y^2 + 9y + 81/4

2007-08-07 02:15:29 · answer #2 · answered by 037 G 6 · 0⤊ 1⤋

Y^2+9y+ (81/4)

you cannot get a perfect square, so multiply everything by 4

4y^2+36y+81

2007-08-07 02:13:11 · answer #3 · answered by driftaddict87 4 · 0⤊ 1⤋

i believe its (y+3) (y+3) but im not 100% sure

2007-08-07 02:14:31 · answer #4 · answered by playtough01 2 · 0⤊ 1⤋